Question 1 (5 marks) Wireless Network Standards Investigate the differences between 802.11a, b, g, n, ac, ad, af, ah, and ax technologies. What are their wavelength(s), ranges, speeds, kinds and numbers of antennas, bandwidth, etc. Which ones use MIMO? And what is MIMO anyway? Write a paragraph explaining each one, and finally provide a summary table that will aid in comparison between them.

Question 2 (5 marks) Home Router Recommendations Your client has asked you to recommend routers you would buy with budgets of, respectively, $100, $250 and $500. Write a report giving a recommendation for each budget, and justifying your recommendations by comparing them with other options within the price limit. You should also include a summary table highlighting the differences between the three different options that you have recommended. Be sure to be clear about which 802.11 standards each of your recommendations implements. (You will need to explore commercial websites or shops to find out what is available, and at what price. Be sure to cite in your references where you found the details about the routers you recommend, where you would purchase them, and what the supplier is charging for them.) Question 3 (5 marks) Warehouse Network Design A warehouse, 100 meters by 40 meters with a 15 meter tall ceiling, is to be networked. The network will not be heavily used since there are only a few workers working in the warehouse at any given point in time, but the coverage needs to be complete as a worker may be on a forklift, ladder, or cherry picker, in any position within the building when he or she needs to update the warehouses stock database. The owners have explained that not much bandwidth is required (the workers are not meant to be streaming video, listening to audio, or playing interactive games on the network). They have seen your report (Question 2) recommending a particular router that costs less than $100.

Prepare a recommendation explaining how you would position multiple instances of that router in the warehouse, and what channels you would have each instance operate on, to ensure complete coverage, appropriately low interference, and minimal total cost. Be sure to explain clearly the proposed position and channel for each router (after all, someone else will be installing them, not you). As always, justify your recommendation.